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Cylinder mode selection system for variable displacement internal combustion engine

  • US 5,408,974 A
  • Filed: 12/23/1993
  • Issued: 04/25/1995
  • Est. Priority Date: 12/23/1993
  • Status: Expired due to Term
First Claim
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1. A system for selecting the number of cylinders to be operated in a multicylinder variable displacement internal combustion engine installed in a vehicle having a driver operable accelerator control, comprising:

  • an accelerator control position sensor for determining the operating position of the accelerator control and for generating an acclerator control position signal indicating such position;

    an engine speed sensor for determining the speed of the engine and for generating an engine speed signal indicating such speed; and

    a processor containing stored values for engine load as functions of engine speed and accelerator control position and engine speed at wide open throttle, with said processor further comprising means for receiving said accelerator control position, engine speed, and engine load signals and for inferring engine load based on the accelerator control position and upon engine speed, with said processor further comprising means for comparing the sensed engine load with the stored value for engine load at wide open throttle and the same engine speed and for selecting the number of cylinders to be operated based at least in part upon the results said comparison.

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